Pre-seminal fluid (Pre-cum)

Pre-seminal fluid (also known as pre-cum, pre-ejaculatory fluid, or Cowper’s fluid) is a liquid that comes out of the urinary opening (the small hole on the tip of the penis) during an erection. 

The amount of fluid released varies.

The main purpose of the pre-seminal fluid is to clean the urethra of residual urine, whose acidity can damage the sperm expelled during ejaculation. Pre-seminal fluid also acts as a lubricant.

It is very important to keep in mind that on rare occasions pre-seminal fluid contains traces of sperm in a concentration high enough to cause pregnancy. 

It can also carry certain sexually transmitted diseases (STDs), such as HIV.


Sperm are male reproductive cells that are produced and developed in the testicles. 

At maturity, after about 70 days, they have taken on their typical head-and-tail, tadpole-like shape and are ready to be mixed with other fluid to form semen. 

There are approximately 40 million reproductive sperm within the semen of an average ejaculation.

Ejaculation (Cumming)

Ejaculation is the expulsion of semen (cum, in slang) from the urethra (the opening on the tip of the penis).

Ejaculation usually happens in conjunction with an orgasm, but it is possible for a man to have an orgasm without ejaculating or to ejaculate without having an orgasm.

After ejaculation, the penis usually loses its erection and returns to a relaxed state.

What are blue balls?

The term blue balls refer to a cramp-like pain that a man might experience in the testicle area after a prolonged erection that doesn’t end with ejaculation. 

This is not a serious condition, and the pain will go away by itself shortly after your penis returns to a relaxed state. Women can experience a similar type of pain after a prolonged state of arousal.

Spontaneous erections: Why does a penis suddenly get hard?

Erections are generally triggered by some sort of sexual stimulus. 

The stimulus can be mental (thinking about something sexual), visual (seeing something sexual), or physical (touching or being touched in a way that causes sexual excitement).

During puberty, the high level of hormones in the body makes the penis extremely sensitive, which means erections can happen with very light stimulus or with no stimulus at all.

Unfortunately, there isn’t much you can do to avoid spontaneous erections; they are a side effect of the process of becoming an adult. 

In fact, they are perfectly normal, and they happen to almost all boys; luckily, they will happen less and less as you get older.

As far as the embarrassment that spontaneous erections might cause, the best way to avoid it is to be aware of this phenomenon and to be ready to react when it happens. 

For example, maneuvers of disguise—like wearing your shirt outside your pants instead of tucking it in, putting your hands in your pockets, or sitting down with something on your lap—can prove very effective in avoiding people’s attention. 

At the same time, trying to think about something else rather than focusing on the problem can help end the erection.

What is an erection (Boner/ Hard-on)?

The term erection refers to the swelling, enlargement, and hardening of the penis. 

Most of the penis is made of spongy tissue. During an erection, blood rushes to the penis and causes the spongy tissue to swell. 

The penis becomes longer, larger, and harder, and sticks out away from the body.

Erections are generally triggered by some sort of sexual stimulus. T

The stimulus can be mental (thinking about something sexual), visual (seeing something sexual), or physical (touching or being touched in a way that causes sexual excitement). 

Some erections have nothing to do with sexual stimulation, however—for example, erections that happen while you are asleep and erections driven by hormones during puberty.

What does an erect penis look like?

An erect penis looks kind of like a tube sticking out of the body.

The penis has two main parts: the shaft (the main body), a sort of cylinder that is usually slightly bigger at the base (the part attached to the body), and the head, which is shaped somewhat like the head of a mushroom. 

In an erect penis, the head can vary in size; it can be a bit larger than the shaft, roughly of the same size, or slightly smaller.

An erect penis might be straight or slightly curved like a banana, and it generally sticks out of the body at an upward angle (though penises pointing straight out or even slightly downward are absolutely normal). 

In uncircumcised men, the foreskin (the skin covering the head) of an erect penis may either retract completely, fully uncovering the head or remain partially over it.

Circumcised men, who had a surgical operation to remove their foreskin, have penis heads that resemble smooth helmets.

All of these possibilities are perfectly normal, and the resulting penises are all able to give pleasure and perform their sexual functions.

Did you learn something?

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